- Mar 14, 2011
- 1,198
- 17
- 148
DE won't kill them. You'll have to use Sevin to dust the birds, then you'll need to completely clean out the coop and either dust it with Sevin, or spray it with a mixture of bleach water. I think it's often debated whether DE is even a good preventative. I can't comment on that though - never used it!